2001 TOYOTA SEQUOIA wiring diagram

I24834
F10
FL Block1J 1CInstrument Panel J/B
IG2B±R I18
Ignition SW
Battery 56
B B W±R AM22
17
IGN1
1C1E
7
3
4 5Transponder Key ECU
IG 2
2CT16
2DB±O
1B±O
W±R
1 AM2 Engine Room J/BSub J/B No. 4
212
4D 4A
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI±1587
1781 Author: Date:
2005 SEQUOIA (RM1146U)
Code 13 is not output
CIRCUIT DESCRIPTION
The transponder key ECU outputs DTC 13 when the ignition switch is ON.
HINT:
DTC 13 is a normal code.
DTC No.DTC Detecting ConditionTrouble Area
13Ignition switch operates normally.

Ignition switch

Transponder key ECU

Wire harness
WIRING DIAGRAM
DIABF±04

I03114
T6
Transponder Key
Amplifier
13
T16Transponder Key ECU
CODE RXCKTXCT
6
5
45
T16
4
T16 Y±G
LG
R±Y RXCK
CODE TXCT
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI±1589
1783 Author: Date:
2005 SEQUOIA (RM1146U)
Code 21 or 22 is not output
CIRCUIT DESCRIPTION
The transponder key ECU outputs DTC 21 while the immobilizer system is deactivated by use of the master
key, and outputs DTC 22 while it is deactivated by use of the sub key.
HINT:
DTCs 21 and 22 are normal codes.
DTC No.
(See Page)DTC Detecting ConditionTrouble Area
21, 22Communication is normal.

Key

Transponder key ECU

Transponder key amplifier with key coil

Wire harness
WIRING DIAGRAM
DIABG±04

I24830
ECMT16
Transponder Key ECU
IMI
IMO16
15P±G
11
10EFIO
EFII L±Y E5
E5
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI±1593
1787 Author: Date:
2005 SEQUOIA (RM1146U)
Code 32 or 33 is output
CIRCUIT DESCRIPTION
The transponder key ECU indicates DTC 32 when a key without a key code is inserted, and indicates DTC
33 when a key code cannot be identified.
HINT:
DTCs 32 and 33 are abnormal codes.
DTC No.DTC Detecting ConditionTrouble Area
32, 33Communication error

Key

Transponder key ECU

Wire harness
WIRING DIAGRAM
DIABI±04

I24831
Transponder Key ECU
Sub J/B No. 3
+B
J43
J/C
51
O
BatteryF10
FL BlockW±R
B
4
IG BEngine Room J/B W±R32
1J
1E Instrument Panel J/B
A
AGND O14
T16 T16 1
2
W±R
3A 3B
81
2C
2D ECU±B
SHORT PIN
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI±1595
1789 Author: Date:
2005 SEQUOIA (RM1146U)
Power source circuit
CIRCUIT DESCRIPTION
This circuit provides power to operate the transponder key ECU.
WIRING DIAGRAM
DI7TO±07

I24835
Instrument Panel J/B
6 9
BR
1F 1D W±B
A
IEJ8
J/C12
C6C516
LG±B7
T16IND Combination MeterTransponder Key ECU
Security
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI±1597
1791 Author: Date:
2005 SEQUOIA (RM1146U)
Security Indicator Light Circuit
CIRCUIT DESCRIPTION
When the transponder key is registered, the transponder key ECU outputs the key registration condition by
illuminating, blinking or turning off the security indicator.
WIRING DIAGRAM
DIABJ±03

I24837
IGTransponder Key ECU
D 3
T16
OJ43
J/C W±L
8 OP3 D6
DLC3
CG
4A
AO
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI±1599
1793 Author: Date:
2005 SEQUOIA (RM1146U)
Diagnosis Circuit
CIRCUIT DESCRIPTION
This circuit sends a signal to the ECU that outputs DTCs.
WIRING DIAGRAM
DIABK±03

I28557
I18
Ignition SWInstrument Panel J/BCombination Meter
Engine Room J/B
Sub J/B No. 4
IEBattery J8
J/CIA5 F10
Fusible
Link BlockC6
C5 C6
C6
C5 1F
1J
1C1D
1H
1C
1C1D
1D
1J
1J
2C 2D
222C
4B 4A AM2IG2
ST2
(*1) (*2)
W±B
W±R
B±R
B±WBR
B±O W±R
B±R
W±R W±RB±R
B±R B
AB
B
BB 893
98
2
1 1
1 4
5Short Pin
ECU±B
AM2
STA 4 5
8 211 9
37 6
53 396
IGN1
IGN212
23
24
28
Engine Room R/B
*1: Head (USA)
*2: Tail (CANADA)
± DIAGNOSTICSCOMBINATION METER SYSTEM
DI±1629
1823 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM

I28558
C612
W±B
Battery AW
58BR
IECombination Meter
W±L I18
Ignition SW
2 1
AM1 IG1
B±Y
W Instrument Panel J/B
AM1
21 47
6 1 6
9 1C
1C
1D 1E
1L
1FR±L
R±LSub J/B No. 3
3B 3A515C524
C610 R±L
Y±RY
Y±RY
13
23 19
26
IG4
IG4
IG4
GAUGE
B V1
Vehicle Speed Sensor
(Combination Meter)
F10
Fusible Link Block
J8
J/C DI±1632
± DIAGNOSTICSCOMBINATION METER SYSTEM
1826 Author: Date:
2005 SEQUOIA (RM1146U)
Malfunction in speedometer
CIRCUIT DESCRIPTION
The speedometer detects vehicle speed based on a 4±pulse signal from the vehicle speed sensor.
WIRING DIAGRAM
DID8Z±01